Copying text closes the keyboard and the text input gets unfocused, forcing virtual keyboard is get…

Source/web/WebLocalFrameImpl.cpp

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions are
  * met:
  *
  *     * Redistributions of source code must retain the above copyright
  * notice, this list of conditions and the following disclaimer.
  *     * Redistributions in binary form must reproduce the above
@@ skipping 1816 matching lines @@
         // Finally clear the active match, for two reasons:
         // We just finished the find 'session' and we don't want future (potentially
         // unrelated) find 'sessions' operations to start at the same place.
         // The WebLocalFrameImpl could get reused and the activeMatch could end up pointing
         // to a document that is no longer valid. Keeping an invalid reference around
         // is just asking for trouble.
         m_textFinder->resetActiveMatch();
     }
 }
 
+bool WebLocalFrameImpl::setCaretSelectionFromRangeSelection()
+{
+    if (!hasSelection())

[yosin_UTC9, 2014/06/17 01:16:59]

Q: Why do we need to call |hasSelection|?
It seems just call |FrameSelection::collapseToEnd()| is enough.
|WebLocalFrameImpl::setelectionRange()| is one line function, it just call
|FrameSelection::toNormalizedRange()|.

[AKVT, 2014/06/17 06:35:46]

Done.

+        return false;
+
+    // Collapse the selection to end of Range Selection.
+    FrameSelection& selection = frame()->selection();
+    return selection.collapseToEnd();
+}
+
 void WebLocalFrameImpl::didFail(const ResourceError& error, bool wasProvisional)
 {
     if (!client())
         return;
     WebURLError webError = error;
     if (wasProvisional)
         client()->didFailProvisionalLoad(this, webError);
     else
         client()->didFailLoad(this, webError);
 }
@@ skipping 99 matching lines @@
 
 void WebLocalFrameImpl::initializeAsChildFrame(FrameHost* host, FrameOwner* owner, const AtomicString& name, const AtomicString& fallbackName)
 {
     setWebCoreFrame(LocalFrame::create(&m_frameLoaderClientImpl, host, owner));
     frame()->tree().setName(name, fallbackName);
     // May dispatch JS events; frame() may be null after this.
     frame()->init();
 }
 
 } // namespace blink